diff --git a/shared/i_logger.h b/shared/i_logger.h
new file mode 100644
index 0000000..d3d0c1e
--- /dev/null
+++ b/shared/i_logger.h
@@ -0,0 +1,10 @@
+#pragma once
+
+#include <string>
+
+class ILogger
+{
+
+public:
+    virtual void Log(const std::string &txt, bool critical = false)  = 0;
+};
diff --git a/shared/library_manager.cpp b/shared/library_manager.cpp
index 7d09fef..db0a6c1 100644
--- a/shared/library_manager.cpp
+++ b/shared/library_manager.cpp
@@ -8,7 +8,19 @@
 #include "uuid.h"
 
 
-LibraryManager::LibraryManager() {}
+LibraryManager::LibraryManager(ILogger &log)
+    : m_log(log)
+{
+
+}
+
+LibraryManager::~LibraryManager()
+{
+    if (m_copyWorker.joinable())
+    {
+        m_copyWorker.join();
+    }
+}
 
 void LibraryManager::Initialize(const std::string &library_path)
 {
@@ -43,7 +55,7 @@ void LibraryManager::Scan()
                     if (std::filesystem::exists(p))
                     {
                         // okay, open it
-                        auto proj = std::make_shared<StoryProject>();
+                        auto proj = std::make_shared<StoryProject>(m_log);
                         try {
                             std::ifstream f(p);
                             nlohmann::json j = nlohmann::json::parse(f);
@@ -55,7 +67,7 @@ void LibraryManager::Scan()
                                 m_projectsList.push_back(proj);
                             }
                         }
-                        catch(std::exception &e)
+                        catch(nlohmann::json::exception &e)
                         {
                             std::cout << e.what() << std::endl;
                         }
@@ -68,7 +80,7 @@ void LibraryManager::Scan()
 
 std::shared_ptr<StoryProject> LibraryManager::NewProject()
 {
-    auto story = std::make_shared<StoryProject>();
+    auto story = std::make_shared<StoryProject>(m_log);
     std::string uuid = Uuid().String();
 
     story->New(uuid, m_library_path);
@@ -92,10 +104,15 @@ std::shared_ptr<StoryProject> LibraryManager::GetStory(const std::string &uuid)
     return current;
 }
 
-void LibraryManager::Save()
+std::string LibraryManager::IndexFileName() const
 {
     auto p = std::filesystem::path(m_library_path) / "index.ost";
-    Tlv tlv(p.string());
+    return p.string();
+}
+
+void LibraryManager::Save()
+{
+    Tlv tlv;
 
     tlv.add_object(1);
     tlv.add_string(GetVersion());
@@ -115,6 +132,8 @@ void LibraryManager::Save()
         }
     }
 
+    tlv.Save(IndexFileName());
+
     /*
 
 
@@ -130,16 +149,37 @@ void LibraryManager::Save()
 
 void LibraryManager::CopyToDevice(const std::string &outputDir)
 {
-    std::thread myThread([&]() {
-        myThread.detach();
+    try
+    {  
+        // Generate TLV file (index of all stories)
+        Save();
+        // Copy TLV to the directory root
+        std::filesystem::copy(IndexFileName(), outputDir, std::filesystem::copy_options::overwrite_existing);
 
-        std::cout << "Starting to copy elements" << std::endl;
-
-        for (auto p : *this)
+        if (m_copyWorker.joinable())
         {
-            
+            m_copyWorker.join();
         }
-    }); 
+
+        m_copyWorker = std::thread([&, outputDir]() {
+         //   myThread.detach();
+
+            std::cout << "Starting to copy elements" << std::endl;
+
+            for (auto p : *this)
+            {
+                if (p->IsSelected())
+                {
+                    p->CopyToDevice(outputDir);
+                }
+            }
+        }); 
+    } catch (const std::filesystem::filesystem_error& e) {
+        std::cerr << "Filesystem error: " << e.what() << std::endl;
+    } catch(const std::exception& e)
+    {
+        std::cerr << e.what() << '\n';
+    }
 }
 
 bool LibraryManager::IsInitialized() const
diff --git a/shared/library_manager.h b/shared/library_manager.h
index 9786607..b354f68 100644
--- a/shared/library_manager.h
+++ b/shared/library_manager.h
@@ -4,12 +4,15 @@
 #include <string>
 #include <vector>
 #include <memory>
-#include "story_project.h"
+#include <thread>
 
+#include "story_project.h"
+#include "i_logger.h"
 class LibraryManager
 {
 public:
-    LibraryManager();
+    LibraryManager(ILogger &log);
+    ~LibraryManager();
 
     void Initialize(const std::string &library_path);
     bool IsInitialized() const;
@@ -34,13 +37,17 @@ public:
 
     std::shared_ptr<StoryProject> GetStory(const std::string &uuid);
 
+    std::string IndexFileName() const;
+
     void SetStoreUrl(const std::string &store_url) { m_storeUrl = store_url; }
     std::string GetStoreUrl() const { return m_storeUrl; }
 
 private:
+    ILogger &m_log;
     std::string m_library_path;
     std::vector<std::shared_ptr<StoryProject>> m_projectsList;
     std::string m_storeUrl;
+    std::thread m_copyWorker;
 };
 
 #endif // LIBRARYMANAGER_H
diff --git a/shared/resource_manager.cpp b/shared/resource_manager.cpp
index ebacf0c..1868653 100644
--- a/shared/resource_manager.cpp
+++ b/shared/resource_manager.cpp
@@ -1,6 +1,10 @@
-#include "resource_manager.h"
 #include <algorithm>
+#include <filesystem>
 
+
+#include "resource_manager.h"
+#include "media_converter.h"
+#include "sys_lib.h"
 struct Media {
     std::string type;
     std::string format;
@@ -32,3 +36,59 @@ std::string ResourceManager::ExtentionInfo(std::string extension, int info_type)
     }
 }
 
+void ResourceManager::ConvertResources(const std::filesystem::path &assetsPath, const std::string &destAssetsPath)
+{
+    auto [b, e] = Items();
+    for (auto it = b; it != e; ++it)
+    {
+        std::filesystem::path inputfile = std::filesystem::path(assetsPath / (*it)->file);
+        std::filesystem::path outputfile = std::filesystem::path(assetsPath / SysLib::RemoveFileExtension((*it)->file));
+
+        int retCode = 0;
+        if (!std::filesystem::exists(outputfile))
+        {
+            if ((*it)->format == "PNG")
+            {
+                outputfile += ".qoi"; // FIXME: prendre la config en cours désirée
+                retCode = MediaConverter::ImageToQoi(inputfile.generic_string(), outputfile.generic_string());
+            }
+            else if ((*it)->format == "MP3")
+            {
+                outputfile += ".wav"; // FIXME: prendre la config en cours désirée
+                retCode = MediaConverter::Mp3ToWav(inputfile.generic_string(), outputfile.generic_string());
+            }
+            else if ((*it)->format == "OGG")
+            {
+                outputfile += ".wav"; // FIXME: prendre la config en cours désirée
+                retCode = MediaConverter::OggToWav(inputfile.generic_string(), outputfile.generic_string());
+            }
+            else
+            {
+                // Log("Skipped: " + inputfile + ", unknown format" + outputfile, true);
+            }
+        }
+
+        if (retCode < 0)
+        {
+            //m_log.Log("Failed to convert media file " + inputfile + ", error code: " + std::to_string(retCode) + " to: " + outputfile, true);
+        }
+        else if (retCode == 0)
+        {
+            // Log("Convertered file: " + inputfile);
+
+            // Conversion success, now copy to output directory if necessary (ie: to an external device)
+            if ((destAssetsPath != assetsPath.generic_string()) && (std::filesystem::exists(destAssetsPath)))
+            {
+                // destination filename
+                auto destFile = destAssetsPath / outputfile.filename();
+
+                if (!std::filesystem::exists(destFile))
+                {
+                    std::filesystem::copy(outputfile, destAssetsPath, std::filesystem::copy_options::overwrite_existing);
+                }
+            }
+        }
+    }
+}
+
+
diff --git a/shared/resource_manager.h b/shared/resource_manager.h
index b52ccb7..276dc8e 100644
--- a/shared/resource_manager.h
+++ b/shared/resource_manager.h
@@ -9,6 +9,7 @@
 #include <ranges>
 
 #include "resource.h"
+#include "i_logger.h"
 
 class ResourceManager
 {
@@ -24,6 +25,8 @@ public:
 
     static std::string ExtentionInfo(std::string extension, int info_type);
 
+    void ConvertResources(const std::filesystem::path &assetsPath, const std::string &destAssetsPath);
+
     ~ResourceManager() {
 
     }
diff --git a/shared/story_project.cpp b/shared/story_project.cpp
index 21f3602..eabbcfc 100644
--- a/shared/story_project.cpp
+++ b/shared/story_project.cpp
@@ -1,14 +1,17 @@
-#include "story_project.h"
+
 
 #include <fstream>
 #include <iostream>
 #include <filesystem>
 #include <regex>
 
+#include "story_project.h"
 #include "json.hpp"
 #include "media_node.h"
+#include "sys_lib.h"
 
-StoryProject::StoryProject()
+StoryProject::StoryProject(ILogger &log)
+    : m_log(log)
 {
     registerNode<MediaNode>("media-node");
 }
@@ -31,9 +34,26 @@ void StoryProject::SetPaths(const std::string &uuid, const std::string &library_
 void StoryProject::CopyToDevice(const std::string &outputDir)
 {
     ResourceManager manager;
-
-    Load(manager);
     
+    Load(manager);  
+
+    // Output dir is the root. Build an assets directory to the device location
+    std::filesystem::path destRootDir = std::filesystem::path(outputDir) / m_uuid;
+    std::filesystem::path destAssetsDir = destRootDir /  "assets";
+    std::filesystem::create_directories(destAssetsDir);
+
+    // Generate and copy binary
+    std::string code;
+    GenerateScript(code);
+
+    Chip32::Assembler::Error err;
+    if (GenerateBinary(code, err))
+    {
+        std::filesystem::copy(BinaryFileName(), destRootDir, std::filesystem::copy_options::overwrite_existing);
+
+        // Convert resources (if necessary) and copy them to destination assets
+        manager.ConvertResources(AssetsPath(), destAssetsDir);
+    }
 }
 
 void StoryProject::New(const std::string &uuid, const std::string &library_path)
@@ -51,10 +71,15 @@ void StoryProject::New(const std::string &uuid, const std::string &library_path)
     m_initialized = true;
 }
 
-
-void StoryProject::SaveBinary(const std::vector<uint8_t> &m_program)
+std::filesystem::path StoryProject::BinaryFileName() const
 {
-    std::ofstream o(m_working_dir / "story.c32", std::ios::out | std::ios::binary);
+    return m_working_dir / "story.c32";
+}
+
+
+void StoryProject::SaveBinary()
+{
+    std::ofstream o(BinaryFileName() , std::ios::out | std::ios::binary);
     o.write(reinterpret_cast<const char*>(m_program.data()), m_program.size());
     o.close();
 }
@@ -192,13 +217,47 @@ bool StoryProject::ModelFromJson(const nlohmann::json &model)
         }
         success = true;
     }
-    catch(std::exception &e)
+    catch(nlohmann::json::exception &e)
     {
         std::cout << "(NodeEditorWindow::Load) " << e.what() << std::endl;
     }
     return success;
 }
 
+bool StoryProject::CopyProgramTo(uint8_t *memory, uint32_t size)
+{
+    bool success = false;
+    // Update ROM memory
+    if (m_program.size() < size)
+    {
+        std::copy(m_program.begin(), m_program.end(), memory);
+        success = true;
+    }
+    return success;
+}
+
+bool StoryProject::GetAssemblyLine(uint32_t pointer_counter, uint32_t &line)
+{
+    bool success = false;
+    // On recherche quelle est la ligne qui possède une instruction à cette adresse
+    std::vector<Chip32::Instr>::const_iterator ptr = m_assembler.Begin();
+    for (; ptr != m_assembler.End(); ++ptr)
+    {
+        if ((ptr->addr == pointer_counter) && ptr->isRomCode())
+        {
+            break;
+        }
+    }
+
+    if (ptr != m_assembler.End())
+    {
+        line = ptr->line;
+        success = true; 
+    }
+
+    return success;
+}
+
 int StoryProject::OutputsCount(const std::string &nodeId)
 {
     int count = 0;
@@ -258,7 +317,7 @@ std::string StoryProject::FindFirstNode() const
 }
 
 
-bool StoryProject::Build(std::string &codeStr)
+bool StoryProject::GenerateScript(std::string &codeStr)
 {
     std::stringstream code;
     std::stringstream chip32;
@@ -267,7 +326,7 @@ bool StoryProject::Build(std::string &codeStr)
 
     if (firstNode == "")
     {
-        std::cout << "First node not found, there must be only one node with a free input." << std::endl;
+        m_log.Log("First node not found, there must be only one node with a free input.");
         return false;
     }
 
@@ -285,9 +344,51 @@ bool StoryProject::Build(std::string &codeStr)
     }
 
     codeStr = code.str();
+
+    // Add our utility functions
+    std::string buffer;
+
+    std::ifstream f("scripts/media.asm");
+    f.seekg(0, std::ios::end);
+    buffer.resize(f.tellg());
+    f.seekg(0);
+    f.read(buffer.data(), buffer.size());
+    codeStr += buffer;
+
     return true;
 }
 
+bool StoryProject::GenerateBinary(const std::string &code, Chip32::Assembler::Error &err)
+{
+    Chip32::Result result;
+    bool success = false;
+
+    if (m_assembler.Parse(code) == true)
+    {
+        if (m_assembler.BuildBinary(m_program, result) == true)
+        {
+            result.Print();
+
+            m_log.Log("Binary successfully generated.");
+            SaveBinary();
+            success = true;
+        }
+        else
+        {
+            err = m_assembler.GetLastError();
+            
+        }
+    }
+    else
+    {
+        err = m_assembler.GetLastError();
+        m_log.Log(err.ToString(), true);
+    }
+    return success;
+}
+
+
+
 bool StoryProject::Load(ResourceManager &manager)
 {
     try {
@@ -320,69 +421,8 @@ bool StoryProject::Load(ResourceManager &manager)
                 }
             }
         }
-
- /*
-
-        if (j.contains("nodes"))
-        {
-            for (auto& element : j["nodes"])
-            {
-                StoryNode n;
-
-                n.auto_jump = element["auto_jump"];
-
-                for (auto& jump : element["jumps"])
-                {
-                    n.jumps.push_back(jump.get<int>());
-                }
-
-                n.id = element["id"];
-                n.image = element["image"];
-                n.sound = element["sound"];
-
-                m_nodes.push_back(n);
-            }
-        }
-
-        m_images.clear();
-        if (j.contains("images"))
-        {
-            for (auto& element : j["images"])
-            {
-                Resource r;
-
-                r.file = element["file"];
-                r.description = element["description"];
-                r.format = element["format"];
-
-                m_images.push_back(r);
-            }
-        }
-
-        m_sounds.clear();
-        if (j.contains("sounds"))
-        {
-            for (auto& element : j["sounds"])
-            {
-                Resource r;
-
-                r.file = element["file"];
-                r.description = element["description"];
-                r.format = element["format"];
-
-                m_sounds.push_back(r);
-            }
-        }
-
-        m_type = j["type"];
-        m_code = j["code"];
-        m_name = j["name"];
-
-        success = true;
-
-*/
     }
-    catch(std::exception &e)
+    catch(nlohmann::json::exception &e)
     {
         std::cout << e.what() << std::endl;
     }
@@ -463,74 +503,7 @@ void StoryProject::Clear()
     m_links.clear();
 }
 
-void StoryProject::EraseString(std::string &theString, const std::string &toErase)
-{
-    std::size_t found;
-    found = theString.find(toErase);
-    if (found != std::string::npos)
-    {
-        theString.erase(found, toErase.size());
-    }
-}
 
-std::string StoryProject::ToUpper(const std::string &input)
-{
-    std::string str = input;
-    std::transform(str.begin(), str.end(), str.begin(), ::toupper);
-    return str;
-}
-
-std::string StoryProject::GetFileName(const std::string &path)
-{
-    auto found = path.find_last_of("/\\");
-    return path.substr(found+1);
-}
-
-
-void StoryProject::ReplaceCharacter(std::string &theString, const std::string &toFind, const std::string &toReplace)
-{
-    std::size_t found;
-    do
-    {
-        found = theString.find(toFind);
-        if (found != std::string::npos)
-        {
-            theString.replace(found, 1, toReplace);
-        }
-    }
-    while (found != std::string::npos);
-}
-
-std::string StoryProject::RemoveFileExtension(const std::string &FileName)
-{
-    std::string f = GetFileName(FileName);
-    std::string ext = GetFileExtension(f);
-    EraseString(f, "." + ext);
-    return f;
-}
-
-std::string StoryProject::FileToConstant(const std::string &FileName, const std::string &extension)
-{
-    std::string f = RemoveFileExtension(FileName);
-    return "$" + f + " DC8 \"" + f + extension + "\", 8\r\n";
-}
-
-std::string StoryProject::Normalize(const std::string &input)
-{
-    std::string valid_file = input;
-
-    std::replace(valid_file.begin(), valid_file.end(), '\\', '_');
-    std::replace(valid_file.begin(), valid_file.end(), '/', '_');
-    std::replace(valid_file.begin(), valid_file.end(), ':', '_');
-    std::replace(valid_file.begin(), valid_file.end(), '?', '_');
-    std::replace(valid_file.begin(), valid_file.end(), '\"', '_');
-    std::replace(valid_file.begin(), valid_file.end(), '<', '_');
-    std::replace(valid_file.begin(), valid_file.end(), '>', '_');
-    std::replace(valid_file.begin(), valid_file.end(), '|', '_');
-    std::replace(valid_file.begin(), valid_file.end(), ' ', '_');
-
-    return valid_file;
-}
 
 void StoryProject::SetTitleImage(const std::string &titleImage)
 {
@@ -542,12 +515,7 @@ void StoryProject::SetTitleSound(const std::string &titleSound)
     m_titleSound = titleSound;
 }
 
-std::string StoryProject::GetFileExtension(const std::string &fileName)
-{
-    if(fileName.find_last_of(".") != std::string::npos)
-        return fileName.substr(fileName.find_last_of(".")+1);
-    return "";
-}
+
 
 void StoryProject::SetImageFormat(ImageFormat format)
 {
@@ -580,5 +548,11 @@ std::string StoryProject::BuildFullAssetsPath(const std::string &fileName) const
     return (AssetsPath() / fileName).generic_string();
 }
 
+std::string StoryProject::FileToConstant(const std::string &FileName, const std::string &extension)
+{
+    std::string f = SysLib::RemoveFileExtension(FileName);
+    return "$" + f + " DC8 \"" + f + extension + "\", 8\r\n";
+}
+
 
 
diff --git a/shared/story_project.h b/shared/story_project.h
index ae051a0..575df39 100644
--- a/shared/story_project.h
+++ b/shared/story_project.h
@@ -11,6 +11,7 @@
 #include "connection.h"
 #include "base_node.h"
 #include "i_story_project.h"
+#include "chip32_assembler.h"
 
 // FIXME : Structure très Lunii style, à utiliser pour la conversion peut-être ...
 struct StoryNode
@@ -51,7 +52,7 @@ public:
     enum ImageFormat { IMG_FORMAT_BMP_4BITS, IMG_FORMAT_QOIF, IMG_FORMAT_COUNT };
     enum SoundFormat { SND_FORMAT_WAV, SND_FORMAT_QOAF, SND_FORMAT_COUNT };
 
-    StoryProject();
+    StoryProject(ILogger &log);
     ~StoryProject();
 
     bool *Selected() {
@@ -66,20 +67,26 @@ public:
     StoryNode *m_tree;
 */
     void New(const std::string &uuid, const std::string &library_path);
-    bool Build(std::string &codeStr);
+    std::filesystem::path BinaryFileName() const;
+    bool GenerateScript(std::string &codeStr);
+    bool GenerateBinary(const std::string &code, Chip32::Assembler::Error &err);
     bool Load(ResourceManager &manager);
     void Save(ResourceManager &manager);
-    void SaveBinary(const std::vector<uint8_t> &m_program);
+    void SaveBinary();
     void SetPaths(const std::string &uuid, const std::string &library_path);
     void CopyToDevice(const std::string &outputDir);
 
     void ModelToJson(nlohmann::json &model);
     bool ModelFromJson(const nlohmann::json &model);
 
+    bool CopyProgramTo(uint8_t *memory, uint32_t size);
+
+// returns >= 0 on success
+    bool GetAssemblyLine(uint32_t pointer_counter, uint32_t &line);
+
     void CreateTree();
     void Clear();
 
-
     std::pair<std::list<std::shared_ptr<BaseNode>>::iterator, std::list<std::shared_ptr<BaseNode>>::iterator> Nodes() {
         return std::make_pair(m_nodes.begin(), m_nodes.end());
     }
@@ -102,18 +109,13 @@ public:
     std::string GetName() const { return m_name; }
     std::string GetUuid() const { return m_uuid; }
     std::string GetDescription() const { return m_description; }
-    int GetVersion() const { return m_version; }
+    uint32_t GetVersion() const { return m_version; }
 
     std::string BuildFullAssetsPath(const std::string &fileName) const;
 
-    std::filesystem::path AssetsPath() const { return m_assetsPath; }
-
-    static std::string GetFileExtension(const std::string &FileName);
-    static std::string GetFileName(const std::string &path);
-    static std::string RemoveFileExtension(const std::string &FileName);
-    static void ReplaceCharacter(std::string &theString, const std::string &toFind, const std::string &toReplace);
     static std::string FileToConstant(const std::string &FileName, const std::string &extension);
-    static std::string Normalize(const std::string &input);
+
+    std::filesystem::path AssetsPath() const { return m_assetsPath; }
 
     void SetTitleImage(const std::string &titleImage);
     void SetTitleSound(const std::string &titleSound);
@@ -124,9 +126,6 @@ public:
     // Initialize with an existing project
     const bool IsInitialized() const { return m_initialized; }
 
-    static void EraseString(std::string &theString, const std::string &toErase);
-    static std::string ToUpper(const std::string &input);
-
     bool ParseStoryInformation(nlohmann::json &j);
    
     // From IStoryProject
@@ -140,17 +139,22 @@ public:
     void DeleteLink(std::shared_ptr<Connection> c);
     
 private:
+    ILogger &m_log;
+
     // Project properties and location
     std::string m_name; /// human readable name
     std::string m_uuid;
     std::string m_titleImage;
     std::string m_titleSound;
     std::string m_description;
-    int m_version;
+    uint32_t m_version;
     bool m_selected{false};
 
     std::filesystem::path m_assetsPath;
 
+    Chip32::Assembler m_assembler;
+    std::vector<uint8_t> m_program;
+
     // Model in memory
     std::list<std::shared_ptr<Connection>> m_links;
     std::list<std::shared_ptr<BaseNode>> m_nodes;
diff --git a/shared/sys_lib.cpp b/shared/sys_lib.cpp
new file mode 100644
index 0000000..131b8b4
--- /dev/null
+++ b/shared/sys_lib.cpp
@@ -0,0 +1,99 @@
+
+#include "sys_lib.h"
+#include <algorithm>
+#include <regex>
+
+void SysLib::EraseString(std::string &theString, const std::string &toErase)
+{
+    std::size_t found;
+    found = theString.find(toErase);
+    if (found != std::string::npos)
+    {
+        theString.erase(found, toErase.size());
+    }
+}
+
+std::string SysLib::ToUpper(const std::string &input)
+{
+    std::string str = input;
+    std::transform(str.begin(), str.end(), str.begin(), ::toupper);
+    return str;
+}
+
+
+
+std::string SysLib::GetFileExtension(const std::string &fileName)
+{
+    auto idx = fileName.find_last_of(".");
+    if(idx != std::string::npos)
+    {
+        return fileName.substr(idx + 1);
+    }
+    return "";
+}
+
+std::string SysLib::GetFileName(const std::string &path)
+{
+    if (path.size() > 0)
+    {
+        auto found = path.find_last_of("/\\");
+
+        if (found != std::string::npos)
+        {
+            return path.substr(found+1);
+        }
+        else
+        {
+            return "";
+        }
+    }
+    else
+    {
+        return "";
+    }
+}
+
+
+void SysLib::ReplaceCharacter(std::string &theString, const std::string &toFind, const std::string &toReplace)
+{
+    std::size_t found;
+    do
+    {
+        found = theString.find(toFind);
+        if (found != std::string::npos)
+        {
+            theString.replace(found, 1, toReplace);
+        }
+    }
+    while (found != std::string::npos);
+}
+
+std::string SysLib::RemoveFileExtension(const std::string &filename)
+{
+    // Trouver la dernière occurrence du point
+    std::size_t dotPos = filename.rfind('.');
+    if (dotPos == std::string::npos) {
+        // Pas d'extension trouvée, retourner le nom tel quel
+        return filename;
+    }
+    // Retourner la sous-chaîne avant le point
+    return filename.substr(0, dotPos);
+}
+
+
+std::string SysLib::Normalize(const std::string &input)
+{
+    std::string valid_file = input;
+
+    std::replace(valid_file.begin(), valid_file.end(), '\\', '_');
+    std::replace(valid_file.begin(), valid_file.end(), '/', '_');
+    std::replace(valid_file.begin(), valid_file.end(), ':', '_');
+    std::replace(valid_file.begin(), valid_file.end(), '?', '_');
+    std::replace(valid_file.begin(), valid_file.end(), '\"', '_');
+    std::replace(valid_file.begin(), valid_file.end(), '<', '_');
+    std::replace(valid_file.begin(), valid_file.end(), '>', '_');
+    std::replace(valid_file.begin(), valid_file.end(), '|', '_');
+    std::replace(valid_file.begin(), valid_file.end(), ' ', '_');
+
+    return valid_file;
+}
diff --git a/shared/sys_lib.h b/shared/sys_lib.h
new file mode 100644
index 0000000..7e0039f
--- /dev/null
+++ b/shared/sys_lib.h
@@ -0,0 +1,17 @@
+#pragma once
+
+#include <string>
+
+class SysLib
+{
+public:
+
+
+    static std::string GetFileExtension(const std::string &FileName);
+    static std::string GetFileName(const std::string &path);
+    static std::string RemoveFileExtension(const std::string &FileName);
+    static void ReplaceCharacter(std::string &theString, const std::string &toFind, const std::string &toReplace);
+    static std::string Normalize(const std::string &input);
+    static void EraseString(std::string &theString, const std::string &toErase);
+    static std::string ToUpper(const std::string &input);
+};
diff --git a/shared/tlv.h b/shared/tlv.h
index 14b4659..7b6b680 100644
--- a/shared/tlv.h
+++ b/shared/tlv.h
@@ -15,34 +15,41 @@
 class Tlv
 {
 public:
-    explicit Tlv(const std::string &filename)
+    explicit Tlv()
     {
-        m_file = std::ofstream(filename, std::ios::out | std::ios::binary);
     }
 
     ~Tlv() {
-        m_file.close();
+
+    }
+
+    void Save(const std::string &filename)
+    {
+        auto f = std::ofstream(filename, std::ios::out | std::ios::binary);
+        f << m_mem;
+        std::flush(f);
+        f.close();
     }
 
     void add_array(uint16_t size)
     {
-        m_file.write(reinterpret_cast<const char*>(&m_objectType), sizeof(m_objectType));
-        m_file.write(reinterpret_cast<const char*>(&size), sizeof(size));
+        m_mem.append(reinterpret_cast<const char*>(&m_arrayType), sizeof(m_arrayType));
+        m_mem.append(reinterpret_cast<const char*>(&size), sizeof(size));
     }
 
     void add_string(const char *s, uint16_t size)
     {
-        m_file.write(reinterpret_cast<const char*>(&m_stringType), sizeof(m_stringType));
-
-        m_file.write(s, size);
+        m_mem.append(reinterpret_cast<const char*>(&m_stringType), sizeof(m_stringType));
+        m_mem.append(reinterpret_cast<const char*>(&size), sizeof(size));
+        m_mem.append(s, size);
     }
 
     void add_integer(uint32_t value)
     {
         static const uint16_t size = 4;
-        m_file.write(reinterpret_cast<const char*>(&m_integerType), sizeof(m_integerType));
-        m_file.write(reinterpret_cast<const char*>(&size), sizeof(size));
-        m_file.write(reinterpret_cast<const char*>(&value), sizeof(value));
+        m_mem.append(reinterpret_cast<const char*>(&m_integerType), sizeof(m_integerType));
+        m_mem.append(reinterpret_cast<const char*>(&size), sizeof(size));
+        m_mem.append(reinterpret_cast<const char*>(&value), size);
     }
 
     void add_string(const std::string &s)
@@ -52,12 +59,12 @@ public:
 
     void add_object(uint16_t entries)
     {
-        m_file.write(reinterpret_cast<const char*>(&m_arrayType), sizeof(m_arrayType));
-        m_file.write(reinterpret_cast<const char*>(&entries), sizeof(entries));
+        m_mem.append(reinterpret_cast<const char*>(&m_objectType), sizeof(m_objectType));
+        m_mem.append(reinterpret_cast<const char*>(&entries), sizeof(entries));
     }
 
 private:
-    std::ofstream m_file;
+    std::string m_mem;
 
     uint8_t m_arrayType = TLV_ARRAY_TYPE;
     uint8_t m_objectType = TLV_OBJECT_TYPE;
diff --git a/story-editor/CMakeLists.txt b/story-editor/CMakeLists.txt
index ec7b14c..ba5e314 100644
--- a/story-editor/CMakeLists.txt
+++ b/story-editor/CMakeLists.txt
@@ -239,6 +239,8 @@ set(SRCS
     ../shared/thread_safe_queue.h
     ../shared/library_manager.h
     ../shared/library_manager.cpp
+    ../shared/sys_lib.cpp
+    ../shared/sys_lib.h
 )
 
 if(WIN32)
diff --git a/story-editor/src/importers/pack_archive.cpp b/story-editor/src/importers/pack_archive.cpp
index 55f06a5..f7407fb 100644
--- a/story-editor/src/importers/pack_archive.cpp
+++ b/story-editor/src/importers/pack_archive.cpp
@@ -13,8 +13,10 @@
 #include "story_project.h"
 #include "resource_manager.h"
 #include "uuid.h"
+#include "sys_lib.h"
 
-PackArchive::PackArchive()
+PackArchive::PackArchive(ILogger &log)
+    : m_log(log)
 {
 
 }
@@ -34,50 +36,6 @@ std::vector<std::string> PackArchive::GetImages()
 }
 
 
-std::string PackArchive::GetFileName(const std::string &path)
-{
-    auto found = path.find_last_of("/\\");
-    return path.substr(found+1);
-}
-
-std::string PackArchive::GetFileExtension(const std::string &FileName)
-{
-    if(FileName.find_last_of(".") != std::string::npos)
-        return FileName.substr(FileName.find_last_of(".")+1);
-    return "";
-}
-
-void PackArchive::ReplaceCharacter(std::string &theString, const std::string &toFind, const std::string &toReplace)
-{
-    std::size_t found;
-    do
-    {
-        found = theString.find(toFind);
-        if (found != std::string::npos)
-        {
-            theString.replace(found, 1, toReplace);
-        }
-    }
-    while (found != std::string::npos);
-}
-
-void PackArchive::EraseString(std::string &theString, const std::string &toErase)
-{
-    std::size_t found;
-    found = theString.find(toErase);
-    if (found != std::string::npos)
-    {
-        theString.erase(found, toErase.size());
-    }
-}
-
-std::string PackArchive::ToUpper(const std::string &input)
-{
-    std::string str = input;
-    std::transform(str.begin(), str.end(), str.begin(), ::toupper);
-    return str;
-}
-
 void PackArchive::Unzip(const std::string &filePath, const std::string &parent_dest_dir)
 {
     // std::string fileName = GetFileName(filePath);
@@ -189,7 +147,7 @@ std::vector<std::string> PackArchive::FilesToJson(const std::string &type, const
         res_file[12] = '\0';
 
         std::string res_file_string(res_file);
-        ReplaceCharacter(res_file_string, "\\", "/");
+        SysLib::ReplaceCharacter(res_file_string, "\\", "/");
 
         resList.push_back(res_file_string);
 
@@ -381,10 +339,10 @@ bool PackArchive::Load(const std::string &filePath)
     mZip.Close();
     mCurrentNodeId = 0;
 
-    std::string fileName = GetFileName(filePath);
-    std::string ext = GetFileExtension(fileName);
-    EraseString(fileName, "." + ext); // on retire l'extension du pack
-    mPackName = ToUpper(fileName);
+    std::string fileName = SysLib::GetFileName(filePath);
+    std::string ext = SysLib::GetFileExtension(fileName);
+    SysLib::EraseString(fileName, "." + ext); // on retire l'extension du pack
+    mPackName = SysLib::ToUpper(fileName);
 
     std::cout << "Pack name: " << mPackName << std::endl;
 
@@ -427,7 +385,7 @@ bool PackArchive::ImportStudioFormat(const std::string &fileName, const std::str
         // STUDIO format
         std::ifstream f(basePath + "/story.json");
         nlohmann::json j = nlohmann::json::parse(f);
-        StoryProject proj;
+        StoryProject proj(m_log);
         ResourceManager res;
 
         if (j.contains("title"))
@@ -517,7 +475,7 @@ bool PackArchive::ImportStudioFormat(const std::string &fileName, const std::str
     }
     catch(std::exception &e)
     {
-        std::cout << e.what() << std::endl;
+        m_log.Log(std::string("Import failure: ") + e.what());
     }
 
     return false;
@@ -527,7 +485,7 @@ std::string PackArchive::GetImage(const std::string &fileName)
 {
     //"C8B39950DE174EAA8E852A07FC468267/rf/000/05FB5530"
     std::string imagePath = mPackName + "/rf/" + fileName;
-    ReplaceCharacter(imagePath, "\\", "/");
+    SysLib::ReplaceCharacter(imagePath, "\\", "/");
 
     std::cout << "Loading " + imagePath << std::endl;
     return OpenImage(imagePath);
@@ -542,7 +500,7 @@ std::string PackArchive::CurrentSound()
 {
     //"C8B39950DE174EAA8E852A07FC468267/sf/000/05FB5530"
     std::string soundPath = mPackName + "/sf/" + std::string(mCurrentNode.si_file);
-    ReplaceCharacter(soundPath, "\\", "/");
+    SysLib::ReplaceCharacter(soundPath, "\\", "/");
 
     std::cout << "Loading " + soundPath << std::endl;
 
diff --git a/story-editor/src/importers/pack_archive.h b/story-editor/src/importers/pack_archive.h
index 688933e..a7783ec 100644
--- a/story-editor/src/importers/pack_archive.h
+++ b/story-editor/src/importers/pack_archive.h
@@ -6,11 +6,12 @@
 #include <vector>
 #include "ni_parser.h"
 #include "json.hpp"
+#include "i_logger.h"
 
 class PackArchive
 {
 public:
-    PackArchive();
+    PackArchive(ILogger &log);
 
     bool Load(const std::string &filePath);
     std::string OpenImage(const std::string &fileName);
@@ -34,6 +35,7 @@ public:
 
     std::string HexDump(const char *desc, const void *addr, int len);
 private:
+    ILogger &m_log;
     Zip mZip;
     std::string mPackName;
     uint32_t mCurrentNodeId = 0;
@@ -47,11 +49,7 @@ private:
     std::map<std::string, std::string> m_resources;
 
     bool ParseNIFile(const std::string &root);
-    std::string GetFileName(const std::string &path);
-    std::string GetFileExtension(const std::string &FileName);
-    void ReplaceCharacter(std::string &theString, const std::string &toFind, const std::string &toReplace);
-    void EraseString(std::string &theString, const std::string &toErase);
-    std::string ToUpper(const std::string &input);
+
 
     void DecipherFileOnDisk(const std::string &fileName);
     void DecipherFiles(const std::string &directory, const std::string &suffix);
diff --git a/story-editor/src/library_window.cpp b/story-editor/src/library_window.cpp
index c02d8d5..1b0013a 100644
--- a/story-editor/src/library_window.cpp
+++ b/story-editor/src/library_window.cpp
@@ -1,11 +1,13 @@
+#include <filesystem>
+#include <functional>
+
+#include "IconsMaterialDesignIcons.h"
+#include "i_story_manager.h"
+#include "base64.hpp"
+#include "sys_lib.h"
 #include "library_window.h"
 #include "gui.h"
 #include "ImGuiFileDialog.h"
-#include <filesystem>
-#include "IconsMaterialDesignIcons.h"
-#include "i_story_manager.h"
-#include <functional>
-#include "base64.hpp"
 
 typedef int (*xfer_callback_t)(void *clientp, curl_off_t dltotal, curl_off_t dlnow,
                                curl_off_t ultotal, curl_off_t ulnow);
@@ -237,19 +239,21 @@ void LibraryWindow::SharePointJsonDownloadedCallback(bool success, const std::st
         std::ifstream f(filename);
         nlohmann::json j = nlohmann::json::parse(f);
 
-
         std::string archive = j["@content.downloadUrl"].get<std::string>();
         std::string name = j["name"].get<std::string>();
 
-
         m_downloadQueue.push({
             "dl",
             archive,
-            ToLocalStoreFile(StoryProject::Normalize(name)),
+            ToLocalStoreFile(SysLib::Normalize(name)),
             std::bind(&LibraryWindow::StoryFileDownloadedCallback, this, std::placeholders::_1, std::placeholders::_2)
         });
 
     }
+    catch(nlohmann::json::exception &e)
+    {
+        std::cout << "Json parse error: " << e.what() << std::endl;
+    }
     catch(std::exception &e)
     {
         std::cout << e.what() << std::endl;
@@ -261,7 +265,7 @@ void LibraryWindow::StoryFileDownloadedCallback(bool success, const std::string
     std::cout << "Finished to download: " << filename << std::endl;
 
 
-    std::string ext = StoryProject::GetFileExtension(filename);
+    std::string ext = SysLib::GetFileExtension(filename);
 
     if (ext == "zip") 
     {
@@ -354,7 +358,7 @@ inline void InfosPane(const char *vFilter, IGFDUserDatas vUserDatas, bool *vCant
 
 std::string LibraryWindow::ToLocalStoreFile(const std::string &url)
 {
-    auto filename = StoryProject::GetFileName(url);
+    auto filename = SysLib::GetFileName(url);
 
     filename = m_libraryManager.LibraryPath() + "/store/" + filename;
     std::cout << "Store file: " << filename << std::endl;
@@ -576,7 +580,7 @@ void LibraryWindow::Draw()
                                 m_downloadQueue.push({
                                     "dl",
                                     obj.download,
-                                    ToLocalStoreFile(StoryProject::Normalize(obj.title)),
+                                    ToLocalStoreFile(SysLib::Normalize(obj.title)),
                                     std::bind(&LibraryWindow::StoryFileDownloadedCallback, this, std::placeholders::_1, std::placeholders::_2)
                                 });
                             }
@@ -647,9 +651,6 @@ void LibraryWindow::Draw()
 
             if (std::filesystem::is_directory(outputDir))
             {
-                // Generate TLV file (index of all stories)
-                m_libraryManager.Save();
-
                 // Copy all files to device
                 m_libraryManager.CopyToDevice(outputDir);
             }
diff --git a/story-editor/src/main_window.cpp b/story-editor/src/main_window.cpp
index 4a89be3..6303011 100644
--- a/story-editor/src/main_window.cpp
+++ b/story-editor/src/main_window.cpp
@@ -21,7 +21,8 @@
 #include "ImGuiFileDialog.h"
 
 MainWindow::MainWindow()
-    : m_emulatorWindow(*this)
+    : m_libraryManager(*this)
+    , m_emulatorWindow(*this)
     , m_resourcesWindow(*this)
     , m_nodeEditorWindow(*this)
     , m_libraryWindow(*this, m_libraryManager)
@@ -658,7 +659,7 @@ void MainWindow::OpenProject(const std::string &uuid)
 
 void MainWindow::ImportProject(const std::string &fileName, int format)
 {
-    PackArchive archive;
+    PackArchive archive(*this);
 
     archive.ImportStudioFormat(fileName, m_libraryManager.LibraryPath());
 
@@ -710,7 +711,7 @@ void MainWindow::Loop()
 
     while (!done)
     {
-        auto time = SDL_GetTicks();
+        Uint64 frameStart = SDL_GetTicks();
         bool aboutToClose = m_gui.PollEvent();
 
         m_gui.StartFrame();
@@ -755,8 +756,10 @@ void MainWindow::Loop()
 
         
         // Rendering and event handling
-        if ((SDL_GetTicks() - time) < 10) {
-            SDL_Delay(10);
+        Uint64 frameTime = SDL_GetTicks() - frameStart; // Temps écoulé pour la frame
+
+        if (frameTime < 16) { // Limite de 60 FPS
+            SDL_Delay(16 - frameTime); // Attendez pour compléter la frame
         }
 
 
@@ -819,19 +822,46 @@ std::shared_ptr<BaseNode> MainWindow::CreateNode(const std::string &type)
 
 void MainWindow::Build(bool compileonly)
 {
-    // 1. First compile nodes to assembly
-    if (CompileToAssembler())
+    if (m_story->GenerateScript(m_currentCode))
     {
-
-        // 2. Compile the assembly to machine binary
-        GenerateBinary();
+        m_editorWindow.SetScript(m_currentCode);
+        m_dbg.run_result = VM_FINISHED;
+        m_dbg.free_run = false;
 
         if (!compileonly)
         {
             // 3. Convert all media to desired type format
-            ConvertResources();
+            m_resources.ConvertResources(m_story->AssetsPath(), ""); // pas de répertoire de destination
+        }
+
+        Chip32::Assembler::Error err;
+        if (m_story->GenerateBinary(m_currentCode, err))
+        {
+            m_result.Print();
+
+            Log("Binary successfully generated.");
+
+            if (m_story->CopyProgramTo(m_rom_data, sizeof (m_rom_data)))
+            {
+                //            m_ramView->SetMemory(m_ram_data, sizeof(m_ram_data));
+//            m_romView->SetMemory(m_rom_data, m_program.size());
+                m_story->SaveBinary();
+                chip32_initialize(&m_chip32_ctx);
+                m_dbg.run_result = VM_READY;
+                UpdateVmView();
+            }
+            else
+            {
+                Log("Program too big. Expand ROM memory.");
+            }
+        }
+        else
+        {
+            Log(err.ToString(), true);
+            m_editorWindow.AddError(err.line, err.message); // show also the error in the code editor
         }
     }
+
 }
 
 void MainWindow::DeleteNode(const std::string &id)
@@ -849,94 +879,18 @@ std::list<std::shared_ptr<Connection>> MainWindow::GetNodeConnections(const std:
     return m_story->GetNodeConnections(nodeId);
 }
 
-bool MainWindow::CompileToAssembler()
-{
-    // 1. Check if the model can be compiled, check for errors and report
-    // FIXME
-
-    // 2. Generate the assembly code from the model
-    bool ret = m_story->Build(m_currentCode);
-
-    // Add global functions
-    if (ret)
-    {
-        std::string buffer;
-
-        std::ifstream f("scripts/media.asm");
-        f.seekg(0, std::ios::end);
-        buffer.resize(f.tellg());
-        f.seekg(0);
-        f.read(buffer.data(), buffer.size());
-        m_currentCode += buffer;
-
-        m_editorWindow.SetScript(m_currentCode);
-    }
-  
-    return ret;
-}
-
-void MainWindow::GenerateBinary()
-{
-    m_dbg.run_result = VM_FINISHED;
-    m_dbg.free_run = false;
-
-    if (m_assembler.Parse(m_currentCode) == true )
-    {
-        if (m_assembler.BuildBinary(m_program, m_result) == true)
-        {
-            m_result.Print();
-
-            Log("Binary successfully generated.");
-
-            // Update ROM memory
-            std::copy(m_program.begin(), m_program.end(), m_rom_data);
-
-            // FIXME
-//            m_ramView->SetMemory(m_ram_data, sizeof(m_ram_data));
-//            m_romView->SetMemory(m_rom_data, m_program.size());
-            m_story->SaveBinary(m_program);
-            chip32_initialize(&m_chip32_ctx);
-            m_dbg.run_result = VM_READY;
-            UpdateVmView();
-            //            DebugContext::DumpCodeAssembler(m_assembler);
-        }
-        else
-        {
-            Chip32::Assembler::Error err = m_assembler.GetLastError();
-            Log(err.ToString(), true);
-            m_editorWindow.AddError(err.line, err.message); // show also the error in the code editor
-        }
-    }
-    else
-    {
-        Chip32::Assembler::Error err = m_assembler.GetLastError();
-        Log(err.ToString(), true);
-        m_editorWindow.AddError(err.line, err.message); // show also the error in the code editor
-    }
-}
-
 void MainWindow::UpdateVmView()
 {
     // FIXME
 //    m_vmDock->updateRegistersView(m_chip32_ctx);
 
-
     // Highlight next line in the test editor
     uint32_t pcVal = m_chip32_ctx.registers[PC];
 
-    // On recherche quelle est la ligne qui possède une instruction à cette adresse
-    std::vector<Chip32::Instr>::const_iterator ptr = m_assembler.Begin();
-    for (; ptr != m_assembler.End(); ++ptr)
+    uint32_t line = 1;
+    if (m_story->GetAssemblyLine(pcVal, line))
     {
-        if ((ptr->addr == pcVal) && ptr->isRomCode())
-        {
-            break;
-        }
-    }
-
-    if (ptr != m_assembler.End())
-    {
-        m_dbg.line = (ptr->line - 1);
+        m_dbg.line = (line - 1);
         m_editorWindow.HighlightLine(m_dbg.line);
     }
     else
@@ -944,51 +898,10 @@ void MainWindow::UpdateVmView()
         // Not found
         Log("Reached end or instruction not found line: " + std::to_string(m_dbg.line));
     }
-
-
     // Refresh RAM content
 //    m_ramView->SetMemory(m_ram_data, m_chip32_ctx.ram.size);
 }
 
-void MainWindow::ConvertResources()
-{
-    auto [b, e] = m_resources.Items();
-    for (auto it = b; it != e; ++it)
-    {
-        std::string inputfile = m_story->BuildFullAssetsPath((*it)->file.c_str());
-        std::string outputfile = std::filesystem::path(m_story->AssetsPath() / StoryProject::RemoveFileExtension((*it)->file)).string();
-
-        int retCode = 0;
-        if ((*it)->format == "PNG")
-        {
-            outputfile += ".qoi"; // FIXME: prendre la config en cours désirée
-            retCode = MediaConverter::ImageToQoi(inputfile, outputfile);
-        }
-        else if ((*it)->format == "MP3")
-        {
-            outputfile += ".wav"; // FIXME: prendre la config en cours désirée
-            retCode = MediaConverter::Mp3ToWav(inputfile, outputfile);
-        }
-        else if ((*it)->format == "OGG")
-        {
-            outputfile += ".wav"; // FIXME: prendre la config en cours désirée
-            retCode = MediaConverter::OggToWav(inputfile, outputfile);
-        }
-        else
-        {
-            Log("Skipped: " + inputfile + ", unknown format" + outputfile, true);
-        }
-
-        if (retCode < 0)
-        {
-            Log("Failed to convert media file " + inputfile + ", error code: " + std::to_string(retCode) + " to: " + outputfile, true);
-        }
-        else if (retCode == 0)
-        {
-            Log("Convertered file: " + inputfile);
-        }
-    }
-}
 
 void MainWindow::SaveParams()
 {
diff --git a/story-editor/src/main_window.h b/story-editor/src/main_window.h
index 4410a70..d52e556 100644
--- a/story-editor/src/main_window.h
+++ b/story-editor/src/main_window.h
@@ -63,7 +63,7 @@ struct DebugContext
 };
 
 
-class MainWindow : public IStoryManager, public IAudioEvent
+class MainWindow : public IStoryManager, public IAudioEvent, public ILogger
 {
 public:
     MainWindow();
@@ -82,9 +82,7 @@ private:
     uint8_t m_ram_data[16*1024];
     chip32_ctx_t m_chip32_ctx;
 
-    // Assembleur & Debugger
-    std::vector<uint8_t> m_program;
-    Chip32::Assembler m_assembler;
+    
     Chip32::Result m_result;
     DebugContext m_dbg;
     std::string m_currentCode;
@@ -124,7 +122,6 @@ private:
     // From IStoryManager (proxy to StoryProject class)
     virtual void OpenProject(const std::string &uuid) override;
     virtual void ImportProject(const std::string &fileName, int format);
-    virtual void Log(const std::string &txt, bool critical = false) override;
     virtual void PlaySoundFile(const std::string &fileName) override;;
     virtual std::string BuildFullAssetsPath(const std::string &fileName) const override;
     virtual std::pair<FilterIterator, FilterIterator> Images() override;
@@ -148,6 +145,10 @@ private:
     virtual void Next() override;
     virtual void Previous() override;
 
+
+    // From ILogger
+    virtual void Log(const std::string &txt, bool critical = false) override;
+
     // From IAudioEvent
     virtual void EndOfAudio() override;
 
@@ -162,9 +163,6 @@ private:
     void CloseProject();
     void DrawStatusBar();
 
-    bool CompileToAssembler();
-    void ConvertResources();
-    void GenerateBinary();
     void UpdateVmView();
     uint8_t Syscall(chip32_ctx_t *ctx, uint8_t code);
     std::string GetFileNameFromMemory(uint32_t addr);
diff --git a/story-editor/src/node_engine/media_node.cpp b/story-editor/src/node_engine/media_node.cpp
index 169be5d..0bf2bb4 100644
--- a/story-editor/src/node_engine/media_node.cpp
+++ b/story-editor/src/node_engine/media_node.cpp
@@ -1,7 +1,7 @@
 #include "media_node.h"
 #include "story_project.h"
 #include "connection.h"
-
+#include "sys_lib.h"
 
 static std::string ChoiceLabel(const std::string &id)
 {
@@ -74,25 +74,26 @@ std::string MediaNode::Build(IStoryProject &story, int nb_out_conns)
        << " Type: "
        << (nb_out_conns == 0 ? "End" : nb_out_conns == 1 ? "Transition" : "Choice")
        << "\n";
-    std::string image = StoryProject::RemoveFileExtension(image);
-    std::string sound = StoryProject::RemoveFileExtension(sound);
+
+    std::string img = SysLib::RemoveFileExtension(image);
+    std::string snd = SysLib::RemoveFileExtension(sound);
 
     // Le label de ce noeud est généré de la façon suivante :
     // "media" + Node ID + id du noeud parent. Si pas de noeud parent, alors rien
     ss << BaseNode::GetEntryLabel(GetId()) << ":\n";
 
-    if (image.size() > 0)
+    if (img.size() > 0)
     {
-        ss << "lcons r0, $" << image  << "\n";
+        ss << "lcons r0, $" << img  << "\n";
     }
     else
     {
         ss << "lcons r0, 0\n";
     }
 
-    if (sound.size() > 0)
+    if (snd.size() > 0)
     {
-        ss << "lcons r1, $" << sound  << "\n";
+        ss << "lcons r1, $" << snd  << "\n";
     }
     else
     {